diff --git a/recipes/windows/cores-windows-x64_seh-generic.conf b/recipes/windows/cores-windows-x64_seh-generic.conf
index 1c495ba4..684e8cc7 100644
--- a/recipes/windows/cores-windows-x64_seh-generic.conf
+++ b/recipes/windows/cores-windows-x64_seh-generic.conf
@@ -1,4 +1,5 @@
 PATH /mingw64/bin
+MSYSTEM MINGW64
 platform MINGW64
 PLATFORM windows
 ARCH x86_64